Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue:
Services	$ 5,627	$ 5,521	$ 16,527	$ 16,615
Product sales	1,845	1,590	5,236	4,598
Total revenue	7,472	7,111	21,763	21,213
Operating costs and expenses:
Cost of services	4,765	4,751	14,144	13,622
Cost of sales	1,519	1,339	4,386	3,911
Loss contingency for Macondo well incident	0	0	1,000	300
General and administrative	80	67	239	202
Total operating costs and expenses	6,364	6,157	19,769	18,035
Operating income (loss)	1,108	954	1,994	3,178
Interest expense, net of interest income	(91)	(71)	(233)	(225)
Other, net	(12)	(6)	(37)	(30)
Income (loss) from continuing operations before income taxes	1,005	877	1,724	2,923
(Provision) benefit for income taxes	(296)	(267)	(380)	(928)
Income (loss) from continuing operations	709	610	1,344	1,995
Income (loss) from discontinued operations, net of income tax	(1)	(6)	(4)	(22)
Net income (loss)	708	604	1,340	1,973
Noncontrolling interest in net (income) loss of subsidiaries	(2)	(2)	(8)	(7)
Net income (loss) attributable to company	706	602	1,332	1,966
Amounts attributable to company shareholders:
Income (loss) from continuing operations	707	608	1,336	1,988
Income (loss) from discontinued operations, net	(1)	(6)	(4)	(22)
Net income (loss) attributable to company	$ 706	$ 602	$ 1,332	$ 1,966
Basic income per share attributable to company shareholders:
Income (loss) from continuing operations (in dollars per share)	$ 0.79	$ 0.66	$ 1.46	$ 2.15
Income (loss) from discontinued operations, net (in dollars per share)	$ 0.00	$ (0.01)	$ 0.00	$ (0.02)
Net income (loss) per share (in dollars per share)	$ 0.79	$ 0.65	$ 1.46	$ 2.13
Diluted income per share attributable to company shareholders:
Income (loss) from continuing operations (in dollars per share)	$ 0.79	$ 0.65	$ 1.45	$ 2.14
Income (loss) from discontinued operations, net (in dollars per share)	$ 0.00	$ 0.00	$ 0.00	$ (0.02)
Net income (loss) per share (in dollars per share)	$ 0.79	$ 0.65	$ 1.45	$ 2.12
Cash dividends per share (in dollars per share)	$ 0.125	$ 0.09	$ 0.375	$ 0.27
Basic weighted average common shares outstanding (in shares)	890	928	915	925
Diluted weighted average common shares outstanding (in shares)	894	930	919	927